My 2007 chevy hhr has reduced engine power. Throttle body tps and the accelerator position sensor have been replaced. Throws p0325 knock sensor code. Will bad knock sensor produce the reduced engine power and cause the car to run in limp mode

 

I HAVE THE SAME PROBLEM DID YOU FIXED PLEASE ANSWER WHEN YOU HAVE TIME thank you

 

Mine had the same issue and it ended up being the throttle body went bad. You can also check the mass air flow sensor in the throttle body. If it's dirty or fouled up it can have same effect. Broken evap lines can cause this also.

 

change your camshaft sensor. Be careful when you remove it as it has a magnet inside

 

replace your camshaft sensor.

 

camshaft sensor needs to be replaced

 

Camshaft position sensor needs to be replaced. There are 2 of them, and they are interchangeable.first one is on the far right corner on the head. The second is on the back side

 

Camshaft position sensor needs to be replaced. There are 2 of them, and they are interchangeable.first one is on the far right corner on the head. The second is on the back side